3v4l.org

run code in 300+ PHP versions simultaneously
<?php $null = 'null'; var_dump(array_key_exists('null', get_defined_vars()));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.40.0070.00718.71
8.3.30.0090.00619.09
8.3.20.0040.00420.31
8.3.10.0000.00823.65
8.3.00.0070.00417.79
8.2.170.0070.00722.96
8.2.160.0100.00322.20
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0080.00019.36
8.2.110.0030.00622.23
8.2.100.0080.00418.07
8.2.90.0080.00019.22
8.2.80.0050.00517.97
8.2.70.0040.00417.63
8.2.60.0080.00018.04
8.2.50.0030.00718.07
8.2.40.0050.00319.82
8.2.30.0070.00018.35
8.2.20.0070.00017.59
8.2.10.0000.00818.05
8.2.00.0000.00919.40
8.1.270.0000.00823.66
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00322.04
8.1.230.0110.00019.00
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0000.00817.23
8.1.190.0040.00417.10
8.1.180.0040.00418.10
8.1.170.0080.00018.51
8.1.160.0000.00721.94
8.1.150.0040.00418.56
8.1.140.0000.00717.38
8.1.130.0000.00717.88
8.1.120.0040.00417.41
8.1.110.0040.00417.39
8.1.100.0000.00717.40
8.1.90.0040.00417.42
8.1.80.0000.00717.29
8.1.70.0000.00717.32
8.1.60.0000.00817.53
8.1.50.0040.00417.36
8.1.40.0040.00417.45
8.1.30.0000.00817.46
8.1.20.0040.00417.52
8.1.10.0000.00717.48
8.1.00.0040.00417.49
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0000.00718.25
8.0.270.0000.00717.20
8.0.260.0030.00317.11
8.0.250.0030.00316.78
8.0.240.0000.00716.76
8.0.230.0000.00716.83
8.0.220.0040.00416.84
8.0.210.0030.00316.89
8.0.200.0000.00616.90
8.0.190.0050.00316.89
8.0.180.0000.00716.74
8.0.170.0070.00016.82
8.0.160.0070.00016.83
8.0.150.0040.00416.84
8.0.140.0030.00516.81
8.0.130.0000.00613.21
8.0.120.0040.00416.69
8.0.110.0040.00416.72
8.0.100.0030.00316.70
8.0.90.0020.00516.68
8.0.80.0190.00316.82
8.0.70.0000.00716.79
8.0.60.0040.00416.84
8.0.50.0040.00416.86
8.0.30.0080.01117.15
8.0.20.0120.01117.40
8.0.10.0040.00416.73
8.0.00.0150.00616.63
7.4.330.0000.00515.03
7.4.320.0000.00716.59
7.4.300.0030.00316.49
7.4.290.0030.00316.50
7.4.280.0000.00716.58
7.4.270.0040.00416.50
7.4.260.0000.01016.48
7.4.250.0000.00816.49
7.4.240.0050.00216.53
7.4.230.0030.00316.50
7.4.220.0150.00916.53
7.4.210.0110.00916.44
7.4.200.0040.00416.25
7.4.160.0060.00916.48
7.4.150.0030.01417.40
7.4.140.0060.01317.86
7.4.130.0160.00716.51
7.4.120.0100.00816.51
7.4.110.0060.01316.45
7.4.100.0080.01416.44
7.4.90.0000.01716.34
7.4.80.0090.01219.39
7.4.70.0160.02716.53
7.4.60.0060.01216.65
7.4.50.0040.00416.56
7.4.40.0030.01416.55
7.4.30.0150.00616.43
7.4.00.0140.00315.01
7.3.330.0030.00313.01
7.3.320.0020.00212.86
7.3.310.0030.00515.97
7.3.300.0030.00316.01
7.3.290.0150.00016.18
7.3.280.0110.01016.10
7.3.270.0120.00617.40
7.3.260.0100.01116.34
7.3.250.0110.00616.37
7.3.240.0100.00716.46
7.3.230.0060.00916.39
7.3.210.0060.01216.46
7.3.200.0160.00619.39
7.3.190.0110.01116.05
7.3.180.0080.00816.35
7.3.170.0090.00616.29
7.3.160.0060.00916.05
7.3.120.0070.00714.53
7.2.330.0100.00716.16
7.2.320.0060.01216.20
7.2.310.0100.00616.52
7.2.300.0090.00916.63
7.2.290.0100.00716.36
7.2.60.0070.00716.35
7.2.00.0060.00619.20
7.1.200.0000.01115.76
7.1.100.0050.00517.74
7.1.70.0070.01017.00
7.1.60.0090.01519.70
7.1.50.0000.02216.52
7.1.00.0000.09022.51
7.0.200.0080.00416.33
7.0.140.0030.07021.99
7.0.60.0100.08319.92
7.0.50.0030.04017.84
7.0.40.0130.05020.30
7.0.30.0330.07720.18
7.0.20.0200.07320.00
7.0.10.0100.08320.02
7.0.00.0070.07320.19
5.6.280.0070.06720.86
5.6.210.0170.04320.66
5.6.200.0070.07718.11
5.6.190.0100.04020.49
5.6.180.0230.08720.78
5.6.170.0270.04320.33
5.6.160.0130.08320.48
5.6.150.0030.04318.13
5.6.140.0100.06718.20
5.6.130.0170.07718.16
5.6.120.0070.06321.00
5.6.110.0030.08021.00
5.6.100.0000.04321.08
5.6.90.0070.04720.99
5.6.80.0170.07020.50
5.5.350.0000.07720.52
5.5.340.0130.07717.98
5.5.330.0070.03720.41
5.5.320.0170.04020.29
5.5.310.0200.05020.50
5.5.300.0070.03317.95
5.5.290.0100.06717.97
5.5.280.0100.04720.97
5.5.270.0130.07720.64
5.5.260.0100.08320.64
5.5.250.0030.04720.77
5.5.240.2870.04320.06
5.4.450.0470.06019.60
5.4.440.0970.06019.57
5.4.430.0900.06019.60
5.4.420.0500.06319.51
5.4.410.1100.05719.35
5.4.400.1200.06719.09
5.4.390.0030.06019.00
5.4.380.0270.05718.48
5.4.370.0130.05318.50
5.4.360.0230.05018.69
5.4.350.0330.05018.71
5.4.340.0270.04718.46
5.4.320.0050.04212.45
5.4.310.0090.03612.45
5.4.300.0070.03512.46
5.4.290.0060.03712.45
5.4.280.0080.03212.35
5.4.270.0060.03612.35
5.4.260.0090.03812.34
5.4.250.0040.03912.35
5.4.240.0060.03612.34
5.4.230.0090.04212.34
5.4.220.0080.04812.34
5.4.210.0060.03812.34
5.4.200.0060.03812.34
5.4.190.0070.03812.33
5.4.180.0100.04812.33
5.4.170.0090.03312.35
5.4.160.0060.03912.34
5.4.150.0070.04912.34
5.4.140.0090.04612.02
5.4.130.0070.03612.01
5.4.120.0030.03711.97
5.4.110.0060.03611.96
5.4.100.0080.03311.96
5.4.90.0050.03711.96
5.4.80.0060.03611.96
5.4.70.0070.03711.96
5.4.60.0050.03511.96
5.4.50.0070.03411.96
5.4.40.0070.03211.95
5.4.30.0030.03811.95
5.4.20.0060.03611.95
5.4.10.0070.03311.95
5.4.00.0050.03611.44
5.3.290.0050.04112.80
5.3.280.0070.03512.71
5.3.270.0060.03812.72
5.3.260.0080.04312.72
5.3.250.0080.03512.72
5.3.240.0070.03612.71
5.3.230.0040.04012.71
5.3.220.0070.03612.68
5.3.210.0060.04012.68
5.3.200.0060.03712.68
5.3.190.0050.03812.68
5.3.180.0070.03712.67
5.3.170.0040.03812.67
5.3.160.0060.03612.67
5.3.150.0100.03312.67
5.3.140.0080.03412.66
5.3.130.0080.03712.66
5.3.120.0070.03612.66
5.3.110.0050.03812.66
5.3.100.0100.03712.12
5.3.90.0060.03612.09
5.3.80.0050.03712.07
5.3.70.0040.03812.07
5.3.60.0080.03412.07
5.3.50.0060.03712.00
5.3.40.0100.03212.00
5.3.30.0050.03611.94
5.3.20.0050.03511.72
5.3.10.0050.03511.69
5.3.00.0030.03811.68
5.2.170.0030.0319.18
5.2.160.0050.0289.18
5.2.150.0040.0329.18
5.2.140.0060.0299.18
5.2.130.0040.0309.13
5.2.120.0050.0279.14
5.2.110.0050.0299.14
5.2.100.0070.0279.14
5.2.90.0040.0309.14
5.2.80.0050.0319.13
5.2.70.0040.0319.13
5.2.60.0050.0299.08
5.2.50.0040.0309.05
5.2.40.0050.0289.03
5.2.30.0020.0329.01
5.2.20.0070.0269.00
5.2.10.0040.0288.92
5.2.00.0040.0358.78
5.1.60.0050.0378.06
5.1.50.0010.0278.05
5.1.40.0080.0218.04
5.1.30.0050.0288.39
5.1.20.0020.0288.41
5.1.10.0060.0258.13
5.1.00.0030.0268.14
5.0.50.0030.0206.61
5.0.40.0040.0186.47
5.0.30.0020.0316.29
5.0.20.0050.0256.26
5.0.10.0030.0216.23
5.0.00.0020.0316.23
4.4.90.0030.0234.78
4.4.80.0030.0154.75
4.4.70.0050.0144.75
4.4.60.0040.0154.75
4.4.50.0030.0174.77
4.4.40.0030.0244.71
4.4.30.0030.0224.76
4.4.20.0040.0134.85
4.4.10.0040.0204.85
4.4.00.0030.0294.76
4.3.110.0030.0154.67
4.3.100.0030.0144.67
4.3.90.0030.0144.63
4.3.80.0050.0214.58
4.3.70.0040.0134.63
4.3.60.0040.0194.62
4.3.50.0000.0214.63
4.3.40.0040.0284.53
4.3.30.0030.0203.28
4.3.20.0020.0153.26
4.3.10.0040.0143.21
4.3.00.0030.01731.27

preferences:
45.55 ms | 400 KiB | 5 Q